Telephone instrument housing



FIG. 1 is a perspective view of a telephone instrument housing, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation thereof;

FIG. 4 is a rear elevation thereof; and

FIG. 5 is a side elevation thereof, the opposite side being a mirror image of the side shown.

The broken line disclosure of a telephone handset and cord in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a telephone instrument housing, as shown and described. 